yeakel



(No Model.)

A. M. YBAKEL. STEM WINDING AND SETTING WATCH.

No. 403,820. Patented May 21 1889.

III

UNITED STATES PATENT OFFICE.

ABRAHAM M. YEAKEL, OF SELLERSVILLE, PENNSYLVANIA, ASSIGNOR TO CRESSMAN &YEAKEL, OF SAME PLACE.

STEM WINDING AND SETTING WATCH.

SPECTFICATION forming part of Letters Patent No. 403,820, dated May 21,1889.

Application filed January 16, 1889. Serial No. 296,392 (No model.)

To aZZ whom it may concern.-

Be it known that I, ABRAHAM M. YEAKEL, a citizen of the United States,and a resident of Sellersville, in the county of Bucks and State ofPennsylvania, have invented cert-ain new and useful Improvements in StemVinding and Setting \Vatches; and I do hereby declare that the followingis a full, clear, and exact description of the invention, which willenable others skilled in the art to which it appertains to make and usethe same, reference being had to the accompanying drawings, which form apart of this specification, and in which- Figure 1 is a front or faceview of a watch with the dialplate removed, showing part of my improvedstem setting and winding mechanism. Fig. 2 is a longitudinal sectionalView of the pendant. Fig. 3 is a perspective view of the same, showingits several component parts separated from one another. Fig. 4 is across-section through the pendant on line a; 00 in Fig. 2. Fig. 5 is adetail view of the winding and setting stem or key removed from thependant, and Fig. 6 represents two sectional detail views of thearbor-socket, which receives the winding and setting stem with itsplunger and yoke.

Like letters of reference denote corresponding parts in all the figures.

This invention relates to that class of stem winding and setting watchesin which the spur wheels or pinionsi which engage the wheels upon thepost of the mainspring and the wheels of the hands are journaled at theends of a yoke having a common spur-wheel engaging at will those wheelsat the ends, and thereby engaging the setting and winding pinion, saidyoke being adapted to be rocked or tilted, so as to engage either thewinding or the setting mechanism, as desired.

The object of my invention is to simplify both the construction and themanner of operating watches of that type; and to this end it consists incertain improvements upon the stem winding and setting mechanism forwhich Letters Patent of the United States No. 350,407 were granted to meon the 5th day of October, 1886, which. said improvements will behereinafter more fully described and claimed.

Reference being had to the accompanying drawings, the letter A denotesthe front plate of the movement; 13, a spur-wheel secured upon the postof the mainspring, (not shown,) and 0 represents the minute-wheel, thewheels B and 0 being disposed on opposite sides of the center arbor andsleeve.

F is the yoke, which is pivoted upon a circular disk or bearing, G, andcarries at one end the wheel M, adapted to intermesh with themainspring-wheel B, and at the other end a wheel, N, similarly adaptedto engage the wheel Qwhich, as we have seen, meshes with the pinion uponthe post of the minute-hand. Thus it will be seen that by tilting orrocking the yoke to one side in the position shown in full lines in Fig.1, wheels M and B will intermesh, while by tilting the yoke in theopposite direction wheels M and B will be disengaged,whereas the wheelsN and C will intermesh or engage each other. Both the wheels M and Nengage opposite sides of a central spur-wheel or toothed ring, I, whichrevolves upon the circular disk or hearing G, and which in turnintermeshes with a bevel-pinion, H, Fig. 6, so that by rotating thelatter a revolving motion will be imparted to wheel I and through it tothe intermeshing yokewheels M and N, which motion will be impartedeither to the winding-wheel B or the setting-wheel 0, according to whichone of said two wheels B or O is in engagementwith its appropriateyoke-whcel for the time being.

I have described this partof the watchmovement, although it forms nopart of my invention, because it is necessary to understand it in orderto properly comprehend the mechanism whereby this tilting or rockingmotion of the yoke is eltected, and which I shall now proceed todescribe.

The pinion ll is provided with a socketed arbor, a, into which fitsmovably the lower square end of the arborstem 1) below its cylindricalshoulder or offset 0, and it follows that when this stem or key isrotated the arbor a and pinion ll will revolve with it. The

cylindrical upper end of the arbor-stem b is threaded and screwed into athreaded socket,-

' ral spring, 2', the lower end of which bears of different makes andstyles.

against a loose collar or washer, j, resting upon the ofiset c of thepin, the end of said spring projecting into a notch, 76, in collar j.The upper end of the spring impinges upon an inwardly-projecting annularoffset or shoulder, Z, in the sleeve f, so that it will be seen thatthespiral spring 11 is confined endwise between the washer j ofthearbor-stem and the inner shoulder, Z, of sleeve f. The latter isinserted through a collar, m, having an upper threaded flange, n, whichis screwed into the rim or flange of the crown, and adownwardly-projecting rim or flange, 0, which overlaps the upper rim ofthe pendant P, so as to have a free sliding up-and-down motion upon thesame. By adjusting the relative positions of the crown or winding-knob eand collar m by means of their intermeshing screw-threads the centralarbor-stem or key-pin, b, (the upper end of which, as we have seen, isfastened in the crown,) may be gaged as to length so as to project moreor less from the lower end of the pendant into the Watch-case andmovement, thereby greatly simplifying and facilitating the adjustment ofthe arbor-stem to the arbor-socket in movements and cases This collar m,by being screwed into the crown and forming a part thereof, alsooperates to make the pendant and its interior mechanism dustproof, aswell as very strong and durable.

By reference to the detail views, Fig. 6, it will be seen that thetilting yoke F bears at one end (011 the side of the wheel N) against aspring, S, which operates to hold the yoke in the position shown indotted lines in Fig. 1that is to say, with the yoke-wheel N engaging thesetting-wheel C; but after the movement has been inserted into itsproper case and the length of the arbor-stem b properly adjusted thetension or pressure of the yoke-spring S is overcome by the pressure of.the stiffer spring, '5, which encircles the arborstem and forces thesame in a downward direction. The squared lower end of this arbor-stemor key-pin b bears against a plunger, p, which is inserted into thesquare socket a from below and bears with its enlarged lower end againsta shoulder, g, on the inner side of the yoke-plate F. Thus it will beseen that, the downward pressure of the stem 12 and plunger p (actuatedby the spiral spring 1') being greater than the lifting-power of theyoke-spring S, the yoke will under normal conditions be in the positionillustrated in full line in Fig. 1, in which the pinions and wheels H,I, M, and B intermesh, so that by revolving the or own or winding-knob ethe watch will be wound; but if a person, by pulling upon thewinding-knob with sufficient force to overcome the tension of its spring2', lifts stem 2) in its socket a, thereby releasing the yoke-plunger p,it follows that pressure upon spring S being now relaxed, the latterwill force the yoke into the setting-position (indicated by dotted linesin Fig. 1) with the pinion s and wheels H, I, N, C, D, and E thrown intoen gagement' with one another, so that by turning the crown while heldin this position the hands may be set. By letting go of the knob it willinstantly and automatically fly back to its normal position, impelled byspring 1', no pressure or other adjustment of the knob or any other partof the watch being necessary to cause the parts to resume their normalpositionz 6., with the yokewheel M and winding-wheel B engaging eachother. i

It will be seen that my improvement is adapted to watch-cases of thedifferent styles known to the trade as dust-proof, openface,hunting-case, &c., and also that it 'maybe applied to all thosemovementsin which the setting mechanism is brought into action bydownward pressure upon the arborstem or key-pin. As types of this classof movements may be mentioned the Waltham, Elgin, Rockford, and manyothers. None of these well-known movements require to be changed oraltered in any manner to adapt them to myimproved automatic stem windingand setting mechanism.

Having thus described my invention, I claim and desire to secure byLetters Patent of the United States 1. In a stem winding and settingwatch of the described class, the combination of the tilting yoke,yoke-spring, socketed arbor, plunger working in said arbor, andspring-actuated arbor-stem or key-pin bearing against the plunger andyoke with a greater downward pressure than the lifting-power of theyoke-spring, substantially as and for the purpose set forth.

2. In a stem. winding and setting watch of the described class, thecombination of the socketed winding and setting arbor, shoulderedarbor-stem or key-pin, spiral spring, crown or winding-knob having adownwardlyprojecting central threaded socket for the attachment of thearbor-stem, the inner sleeve encircling said stem and its spring, thecollar screwed adjustably into the inner rim of the winding-knob, andthe pendant, substantially as and for the purpose shown and set forth.

3. In a stem winding and setting watch, the combination of the case,pendant, central shouldered stem-arbor or key-pin, the Washer Working onthe shoulder of said pin, the spiral spring, shouldered sleeve, sooketedand threaded crown orwi11dingk11ob, and the oo1 1m attached adjustablyto the crown and adapted to slide upon the pendant, substmr tially asand for the purpose shown and set forth.

In testimony that I claim the foregoing as my own I have hereuntoaflixed my signature in presence of two Witnesses.

- ABRAHAM M. YEAKEL.

XVitnesses:

BENJ. H. LESTER, JOHN HARE.

